1.17.1

How to optimize it

1. Downloading Fabric

First you have to download Fabric and install it: https://fabricmc.net/use/ Click on the "Download installer" button:

2. Edit the profile folder (optional step)

Click on "installations", then press on "edit" under the "Fabric" installation.

Change the folder to a new one, for example I created a new profile folder called Fabric inside .minecraft.

3. Install the optimization mod

Download the mod here: https://www.curseforge.com/minecraft/modpacks/fabulously-optimized/files/3456154

Open the zip and extract the folders mods and config inside your .minecraft folder (or inside the Fabric profile folder).

4. Run Fabric

Done!

Now your game will open and run very fast compared to how the vanilla game runs.